Identify the following bone markings:
i. Greater wing
ii. Lesser wing
iii. Sella turcica
iv. Dorsum sellae (on the ridge posterior to the sella turcica)
v. Optic foramen
vi. Superior orbital fissure
vii. Inferior orbital fissure (sphenoid surface)
viii. Foramen rotundum
ix. Foramen ovale
x. Foramen spinosum
Xi. Foramen lacerum (sphenoidal surface)
xii. Medial pterygoid plate
xiii. Lateral pterygoid plate

a. is a broad, flat, and somewhat triangular structure that forms part of the lateral wall of the skull
b. is a thin, vertical plate of bone that forms part of the anterior wall of the middle cranial fossa.
c. is a saddle-shaped depression on the sphenoid bone, located in the middle cranial fossa
d. Is a ridge of bone located posterior to the sella turcica.
e. is a small opening in the sphenoid bone, located just lateral to the sella turcica
f. is a large opening in the sphenoid bone, located superior to the orbit of the eye.
g. is a narrow opening in the sphenoid bone, located inferior to the orbit of the eye.